Seven students took a statistics test and a technology test with the following results:

Statistics Technology

Student Raw Score (X) Standard Score (Z) Raw Score (X) Standard Score (Z)

Jennifer 50 +1.50 50 +1.0

Brian 49 +1.00 48 +0.50

Jay 47 0.0 52 +1.50

Ross 48 +0.50 40 -1.50

Marie 44 -1.50 44 -0.50

Charles 45 -1.00 42 -1.00

Christine 46 -0.50 46 0.00

a. Calculate the mean, median, and mode for each test.

b. Calculate the standard deviation.

c. Create a scatterplot diagram and estimate the correlation coefficient.

d. Briefly describe the relationship.

Statistics Technology

Student Raw Score (X) Standard Score (Z) Raw Score (X) Standard Score (Z)

Jennifer 50 +1.50 50 +1.0

Brian 49 +1.00 48 +0.50

Jay 47 0.0 52 +1.50

Ross 48 +0.50 40 -1.50

Marie 44 -1.50 44 -0.50

Charles 45 -1.00 42 -1.00

Christine 46 -0.50 46 0.00

a. Calculate the mean, median, and mode for each test.

b. Calculate the standard deviation.

c. Create a scatterplot diagram and estimate the correlation coefficient.

d. Briefly describe the relationship.

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